After bearing pressed into the bearing block should be flexible rotation without feeling. If significant rotation is not flexible, it indicates the size of the shaft is too great, the tolerance to be reduced. After such thrust high speed bearing pressed into the shaft turned by hand obvious "imperfections" sense, it may be too much tolerance of the shaft or shaft roundness bad. So when good control shaft and the taper roller bearing chamber also control the roundness tolerance, many domestic manufacturers only tolerance control, no roundness control.
Because the taper roller bearing re high-precision products, such as improper assembly is likely to cause damage to the bearing channel, leading to bearing damage. Thrust cylindrical roller bearings in the assembly should have a dedicated mold and can not beat, pressed into the shaft when the force only a small circle, the circle of force only when the pressure of the big circle. When using pneumatic or hydraulic assembly requirements, in the press-fit upper and lower mold levels to remain outside the state, if any, bearing channel tilt will cause damage due to power, leaving the bearing guide ring.
Slewing bearing is very important!
回复删除Slewing bearing manufacturer